Something is wrong in the world when it states copper cables and someone has to ask to find out that they're copper clad Al. Then again, for this price that's all you could expect and it's not like they won't do the job, but CCA is not ideal for cold weather use.
As much as I dislike CCA and prefer copper, this application seems fine to use CCA. While copper has better conductivity per cross section area, aluminum is better per weight. Essentially, if you want to make a conductor to carry specified current having minimal resistance, aluminum wire will be lighter despite being thicker. Carrying a lighter cable that you may never need seems reasonable.
^ I imagine that weight matters to a hypermiler or cyclist, but not as much to everyone else in their 5000lb SUVs were that difference works out to ~ 0.05% of total vehicle weight.
I also prefer the higher capacity batteries and the additional lead in them works out to more weight difference than that.
Regardless, all copper cables are relatively expensive so if going CCA gets a set in your vehicle...
Weight difference is negligeable, I take it. The price is cheaper on Al too. This deal is on a cable that does the job, cheaper and lighter than copper, seems reasonable.
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I also prefer the higher capacity batteries and the additional lead in them works out to more weight difference than that.
Regardless, all copper cables are relatively expensive so if going CCA gets a set in your vehicle...
Thank you!